FASS Drop-In Series Diesel Fuel System for GM/Chevrolet 2017-2025 Duramax 6.6L

Important: THIS IS NOT A LIFT PUMP! This is an air separation/filtration system that utilizes your factory lift pump. Installation on cab and chassis may require modifications. Not compatible with aftermarket oversized fuel tanks due to mounting space restrictions.

FASS Drop-In Series Diesel Fuel System - 2017-2025 GM L5P Duramax

The FASS Drop-In Series was engineered to be the most effective filtration solution for the L5P Duramax, backed by our limited lifetime warranty. This plug-and-play system protects your engine from fuel contamination issues that can cost thousands in repairs.

Superior Filtration Protection:

• Removes over 99% of water from diesel fuel (3rd-party proven)
• Eliminates entrained air and debris down to 2 microns
• Protects injection system from premature failure
• Unique Extreme Water Separator (XWS) shuts down truck if capacity is reached, preventing major component damage

Performance Benefits:

• Optimizes MPG (results vary)
• Restores horsepower
• Sharpens throttle response
• Increases fuel lubricity by up to 10%
• Extends life of fuel injection system components

Key Features:

• Only drop-in system that retains full water-in-fuel sensor functionality
• Only drop-in system with air separation technology
• 100% plug-and-play - installs in under an hour with no cutting, wiring, or modifications
• Retains factory in-tank lift pump
• Works with factory plastic cap or billet filter cap
• Requires ZERO tuning changes - works with stock or modified trucks
• Exclusive Performance Radius Cuts (PRC) for smooth fuel flow and air prevention
• 2 micron absolute filtration rating
• Decreases pressure drop approximately 1 PSI from OEM filtration system

Fits:

• 2017-2019 Crew Cab Short Bed L5P Duramax
• 2017-2025 Crew Cab Long Bed L5P Duramax